Improvement in envelopes



CHARLES C. KELLY AND JULIUS IMPROVEMENT UNITED STATES PATENT OFFICE.

ooBB, on sT. PAUL, MINNESOTA.

IN ENVELQPES.

Specification forming part of Letters Patent No. 149,484, dated April 7,1874; application Hled Maren 6, 1874.

To all whom it may concern Be it known that we, CHARLES C. KELLY andJULIUS COBB, of St. Paul, in the county of Ramsey and State ofMinnesota, have invented a new and Improved Envelope, and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawing forming a partof this specification, in which- Figure 1 represents a plan of theenvelope, before it is folded. Figs. 2 and 3 represent the samepartially folded, and Fig.'4 the same folded complete.

The invention relates to the construction of package-envelopes, so as tomake them more secure and reliable,

The invention will first be fully described, and then pointed out in theclaim.

A represents the central rectangular 'piece or body of the envelope, BB4 the end flaps, and G G the side iiaps. The side iiap C is made,preferably, rectangular, although it may be rounded at the corners, ifso desired. It is the rst iiap folded, and has two longitudinal slits, cc, that receive the heads c1 ci, of thel opposite side iiap c1, which isfolded next The third flap folded is the end one B, which has a head,l), which passes through the two transverse slits c2 c3 in the sideiiaps. The end flap B is the last one which is folded upon: the others,its head b1 passing through the three transverse slits b2 c4 05 Each oftheheads b b1 c1 has a maximum width toward the base which exceeds thatof the slit into which. it fits, and is recessed under and on each sideIof this base. This allows the formation. of wings that turn and arereadily inserted, While, after insertion, thetT become catches to holdtogether the connected parts.

Having thus described our invention, what we claim is" As an article ofmanufacture, a package envelope consisting of body A, end aps B B',

and side flapsCO ,the said iiaps having heads b b1 c1 c and slits ,b2 ,cc2 c? ci* c5, constructed and arranged as and for the purpose specified.

The above specification of our invention signed by ns this 7th day ofJanuary, A. D. 1874.

Vitnesses:

GATEs A. JOHNSON,

R. W. JOHNSON.

